[Dovecot] Transparent IMAP proxy

[Eugene]

From: Reindl Harald
> why would someone implement a virus scanner on the IMAP-level?
> what happens with POP3?

> this has to be done on SMTP level long before the message is stored
> and not every time a client is downloading a message

Or, as an alternative, most desktop antivirus tools have a mail-scanning 
capability.
But SMTP is certainly better (though IMO even that is not really needed if 
you have reasonable antispam filtering and think before opening 
attachments).

Cheers
Eugene